420340201091 has 16 divisors (see below), whose sum is σ = 441664731648. Its totient is φ = 399271488000.

The previous prime is 420340201019. The next prime is 420340201117. The reversal of 420340201091 is 190102043024.

It is a cyclic number.

It is not a de Polignac number, because 420340201091 - 2¹⁰ = 420340200067 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420340201091.

It is not an unprimeable number, because it can be changed into a prime (420340201691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11606051 + ... + 11642211.

It is an arithmetic number, because the mean of its divisors is an integer number (27604045728).

Almost surely, 2^420340201091 is an apocalyptic number.

420340201091 is a deficient number, since it is larger than the sum of its proper divisors (21324530557).

420340201091 is a wasteful number, since it uses less digits than its factorization.

420340201091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39682.

The product of its (nonzero) digits is 1728, while the sum is 26.

The spelling of 420340201091 in words is "four hundred twenty billion, three hundred forty million, two hundred one thousand, ninety-one".